Combined drilling and grinding machine



Aug; 12 1924.

- t c. JACKSON COMBINED DRILLING AND GRINDING MACHINE Filed April 13,1925 3 Sheets-Sheet 1 Corw/[l Jae/won Aug. 12 ,-1.924@ 1,504,892

- C. JACKSON COMBINED DRILLING AND GRINDING MACHINE F ild April 18. 1925s Sheets-Sheet 2 30 27 7 51 u: "in \K\ 1 u l Z\ v 24 2 5 2,5 I20 l I 52l 3 I I 17 I 5 L 1 EHLIL F T111127! Aug. 12 I924. 1,504,892

' c. JACKSON COMBINED DRILLING AND GRINDING MACHINE Filed min 1a. 1923 sSheets-Sheet Com 1H Jae/{son Bil -1- comparatively light weight. Third,to provide a combined Patented Aug. 12, 1924.

v UNITED STATES COB/WILL JACKSON, 01? KALAMAZOO, MICHIGAN.

COMBINED DRILLING'AND GRINDING MACHINE.

Application filed April '18, 1923.

To all whom it may concern:

Be it known that I, OORWILL JAoKsoN, a citizen of the United States,residing at the city and county of Kalamazoo, State of Michigan, haveinvented certain new and useful Improvements in Combined Drilling andGrinding Machines,- of which the following is a specification.

This invention relates to improvements in combined drilling and grindingmachines.-

My improved drilling and grinding machine is especially designed by mefor use in garages and the like or' for drilling or other work requiringarotary driven spindle and for valve grinding and the like requiring anoscillating spindle or member.

The main objects of'this invention are:

First, to provide an improved motor driven machine of the classdescribed which is very compact and is readily adapted for use of eitherits rotary spindle or its oscillating spindle.

Second, toprovide a' combined drilling and grinding machine having fewparts and these parts arranged so that they are strong and durable andat the same time may be of drilling and grinding machine in which themoving parts are effectively housed and at the same time are readilyaccessible.

Fourth, to provide an improved combined drilling and grinding machinehaving the above advantages which is very simple and economical in itsstructure.

Further objects, and objects relating to structural details, willdefinitely appear from the detailed description to follow:

I accomplish the objects of my invention by the devices and meansdescribed in the following specification. The, invention is clearlydefined and pointed out in' the claims.

A structure which is a preferred embodiment of my invention is clearlyillustrated in the accompanying drawing, forming a part of thisapplication, in which:

Fig. I is a side view of a structure embodying my improvements, a valvegrindi ng tool being illustratedin' position by dotted lines in onedriven spindle and a chuck being shown in full lines in the otherspindle.

I FigLII is a detail'vertical section on the line corresponding to line22 of Fig. III,

Serial No. 633,033.

parts being shown in full lines for convenience in illustration. i I

Fig. III is a horizontal section on a line corresponding to line 33 ofFig. II.

Fig. IV is a horizontal section on a line corresponding to line 44c ofFig. II.

Fig. V is a side elevation partially in vertical section of a modifiedform of my'invention.

i VI is a horizontal section on a line corresponding .to line 66 of Fig.V.

In the drawing similar reference characters refer to similar partsthroughout the several views, and the sectional views are taken lookingin the direction of the little arrows at the ends of the section lines.

Referring to thefdrawing, I provide a frame or support comprising a bodymember 1 having a gear box 2 formed in the upper side thereof and adownwardly facing seat 3 for the motor housing a, the motor .housingbeing clamped in position on this seat by screws as 5 arranged throughthe flanges 6 on the body member.

The body member 1 is provided with a bearing extension 7 in which thespindles 8 and 9 are mounted in parallel relation, as shown in Fig. II.These spindles 8 and 9 are provided with sockets or chucks 10 and 11respectively. The socket 11 is internally threaded to receive the stemof a drill chuck shown conventionally at 12. The socket 10 is adapted toreceive the shank 13 ofthe catch.v

The spindles are provided with suitable bearing bushings l9.

The motor shaft 20 projects into the gear box 2 and is provided with apinion 21. The motor housing is provided with a bearing extension22which fits into an opening 23 in the body member 1 thereby aligningthe shaft andsupporting the housing laterally.

In the, preferred embodiment of my invention shown in Figs. I to IVinclusive, a gear 24 having an eccentric 26 on its underside is mountedon the spindle 9 and meshes with thepinion 21 so that the spindle 9 isdriven with a continuous rotary movement. The spindle 8 is provided witha crank co ,valve grindingtool 14, and has longitudinal acting with theeccentric 26 so that as the gear iszrevolved an oscillating movement isimparted to the spindle 8.

The top member 27 constitutes a cover for the gear box and is providedwith a handle 28 for the manipulation of the machine. The top member isprovided with a thrust bearing member 29 for the spindle 9.

This top member is also provided with a chamber 30 in which the switchfor controlling the motor is placed, the switch mechanism being shownconventionally at 31.

The electric cable for the motor is intro duced through an opening 32 inthe body member 1." I v With this arrangement of parts the machine maybe readily adapted for use for drilling or for valve grinding or otherpurposes requiring oscillating movement.

The machine is very compact and economical in structure, there beingrelatively few parts and these may be of substantial size.

In the modification shown in Fig. V, the partsare arranged in the samegeneral relation as in the structure described, the gear 33corresponding to the gear 24L, being a plain gear, the spindle 3dcorresponding to the spindle 8 and being extended so that its crank isin a plane above the gear 32. This necessitates a structure of largerdimensions as the spindles must be farther apart in order to permit thespindle 34: to project at the edge of the gear 33. The crank 35 isconnected by the link or pitman 36 to a wrist pin 37 on thetop of thegear 33. The crank 35 is longer than the radius of the wrist pin 37 sothat the same oscillating movement is secured for the shaft 34 as in theconstruction of Figs. I to IV, inclusive.

I have not illustrated or described certain other modifications andadaptations which I' contemplate as I believe the disclosure made willenable those skilled in the art to which my invention relates to embodyor adapt the same as may be desired. Havmg thus described my invention,what I claim as new and desire to secure by Letters Patent, is:

1. The combination of a frame comprising "abody member provided with agear box and having a motor housing seat on its underside and a spindlebearing extension disposed at the side of said seat, a top mom b'erconstituting a cover for said gear box and provided with. a hand piece,a motor provlded with a housing mounted on said seat, said motor beingprovided with a shaft projecting intosaid gear box and having. a "pinionthereon, spindles mounted in parallel relation on said spindle bearingextension to project into said gear box, one of said spindlesbeingprovided with a crank, and

a gear mounted on the other of said spindles and meshing with saidpinion on said motor shaft, said gear being operatively connected tosaid spindle crank.

2. The combination of a frame comprising a body member provided with agear box and having a motor housing seat on its underside and a spindlebearing extension disposed at the side of said seat, a motor providedwith a housing mounted on said seat, said motor being provided with ashaft projecting into said gear box and having a pinion thereon,spindles mounted in parallel relation on said spindle bearing extensionto project into said gear box, one of said spindles being provided witha crank, and a gear mounted on the other of said spindles and meshingwith said pinion on said motor shaft, said gear being operativelyconnected to said spindle crank.

3. The combination of a frame comprising a body member provided with agear box, a top member constituting a cover for said gear box andprovided with a hand piece, a motor mounted on said body member andprovided with a shaft projecting into said gear box and having a pinionthereon, spindles disposed on said frame to project into said gear box,one of said spindles being provided with a crank, and a gear mounted onthe other of said spindles and meshing with said pinion on said motorshaft, said gear being operatively connected to said spindle crank.

4. The combination of a frame comprising a body member provided with agear box, a motor mounted on said body member and provided with a shaftprojecting into said gear box and having a pinion thereon,

spindles disposed on said frame to project into said gear box, one ofsaid spindles being provided with a crank, and a gear mounted on theother of said spindles and meshing with said pinion von said motorshaft, said gear having an eccentric on its face coacting with saidspindle crank.

5. The combination of a frame, a pair of spindles carried thereby anddisposed side by side in parallel relation, a gear mounted on one ofsaid spindles to overhang the other and provided with an eccentric onits underside, such overhung spindle being provided with a crankcoacting with said eccentric whereby the spindle on which the gear ismounted is driven with a continuous rotary motion and the spindle havingthe crank is driven with an oscillating motion.

6. The combination of a frame, a pair of spindles disposed thereon sideby side, one of said spindles being provided with a crank, a gearmounted on the other spindle and provided with an eccentric coactingwith said crank so that on the continuous rotation of the gear thespindle on which the gear is mounted is driven with a continuous rotarymotion and the spindle having the crank With an oscillating motion, andmeans for driving said gear.

7. The combination of a frame comprising a body member provided with agear box, a motor mounted on said body member and provided With a shaftprojecting into said gear box and having a pinion thereon, spindlesdisposed on said frame to project into said gear box, one of saidspindles being provided with a crank and a gear mounted on the other ofsaid spindles and meshing With said pinion on said motor shaft, saidgear being operatively connected to said spindle crank whereby anoscillating movement is imparted to one spindle and a rotary motion tothe other.

In Witness whereof, I have hereunto set my hand.

CORVVILL JACKSON.

